a)
download the ESS PCI device identifier utility
b) unzip the utility to your desktop
c) execute the ESPCI_ID.BAT file
d) use windows explorer to find this file: C:\RESULT.TXT
e) double click the file to open
f) look for the &DEV_1xxx in the RESULT.TXT
download the corresponding driver
here (under windows 98se wdm). unzip files to a newly created folder on your desktop.
in device manager uninstall your audio device(s).
run setup in the folder you created on your desktop, reboot.